Littelfuse 0217.050VXP Glass Cartridge Fuse 50mA 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0217.050VXP is a fast-blow glass cartridge fuse rated at 50mA, 250VAC, with a 5mm x 20mm form factor. This component is designed for circuit protection in applications requiring reliable overcurrent interruption. The part is active in production and widely stocked. Equivalent and substitute parts are identified when identical electrical and mechanical parameters are maintained across manufacturers or within the same manufacturer's product lines.

Key Parameters

Parameter	Value
Current Rating	50 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Fast Blow
Package / Case	5mm x 20mm
Breaking Capacity @ Rated Voltage	35A
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Requires Holder
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 0217.050VXP is determined by strict equivalence across the following critical parameters: current rating (50mA), voltage rating (250VAC), fuse type (cartridge glass), response time (fast blow), and physical dimensions (5mm x 20mm). All identified substitutes maintain these core electrical and mechanical specifications. Substitutes are grouped into two categories: parametric equivalents within the Littelfuse 217 series, and direct manufacturer equivalents from alternative suppliers meeting identical performance criteria.

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage Rating (AC)	Fuse Type	Response Time	Package	Breaking Capacity	Operating Temperature	RoHS Status	Inventory Status
0217.050VXP	Littelfuse Inc.	50 mA	250 V	Cartridge, Glass	Fast Blow	5mm x 20mm	35A	-55°C ~ 125°C	ROHS3 Compliant	666 Pcs
0217.050HXP	Littelfuse Inc.	50 mA	250 V	Cartridge, Glass	Fast Blow	5mm x 20mm	35A	-55°C ~ 125°C	ROHS3 Compliant	3075 Pcs
0217.050MXP	Littelfuse Inc.	50 mA	250 V	Cartridge, Glass	Fast Blow	5mm x 20mm	35A	-55°C ~ 125°C	ROHS3 Compliant	2300 Pcs
0034.1529	SCHURTER Inc.	50 mA	250 V	Cartridge, Glass	Fast Blow	5mm x 20mm	35A	-55°C ~ 125°C	ROHS3 Compliant	689 Pcs

Engineering Selection Recommendations

All identified substitutes maintain full electrical and mechanical compatibility with the 0217.050VXP. Selection among these parts should be based on availability and compliance requirements specific to the application. The Littelfuse 0217.050HXP and 0217.050MXP variants are parametric equivalents within the same manufacturer's 217 series, differing only in internal construction designations (H and M variants). The SCHURTER 0034.1529 is a direct manufacturer equivalent from an alternative supplier, certified under the FSF 5x20 series designation. All parts carry ROHS3 compliance and are rated for identical operating temperature ranges. Approval agencies vary slightly between manufacturers; verify specific certifications (CCC, CE, CSA, UL, VDE, K-MARK, SEMKO) against application requirements.

Frequently Asked Questions (FAQ)

Q: Can the 0217.050HXP or 0217.050MXP be used as direct replacements for the 0217.050VXP?

A: Yes. Both parts are parametric equivalents with identical electrical ratings (50mA, 250VAC), fuse type (cartridge glass), response time (fast blow), and physical dimensions (5mm x 20mm). They are interchangeable in applications requiring the 0217.050VXP.

Q: What is the difference between the Littelfuse variants (VXP, HXP, MXP)?

A: The designations (V, H, M) indicate internal construction or manufacturing process variants within the Littelfuse 217 series. All three maintain identical electrical performance and physical specifications. Selection among them is based on availability and application-specific requirements.

Q: Is the SCHURTER 0034.1529 compatible with the Littelfuse 0217.050VXP?

A: Yes. The SCHURTER 0034.1529 meets all critical electrical and mechanical parameters: 50mA current rating, 250VAC voltage rating, fast-blow response, and 5mm x 20mm form factor. It is a direct manufacturer equivalent suitable for applications requiring the Littelfuse part.

Q: Are there any differences in approval certifications between these parts?

A: Approval agencies differ slightly. The Littelfuse variants carry CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE certifications. The SCHURTER part carries CCC, cURus, and VDE certifications. Verify that the selected part meets all certifications required by your application or regional standards.

Q: What is the significance of the 5mm x 20mm package specification?

A: This dimension specifies the physical form factor of the cartridge fuse. All identified substitutes share this specification, ensuring mechanical compatibility with standard 5x20mm fuse holders. This is a critical parameter for direct substitution.

Q: Can these fuses be used in applications rated for different voltages or currents?

A: No. These parts are rated specifically for 50mA at 250VAC. Use only in applications matching these electrical specifications. Substitution is valid only among parts with identical current and voltage ratings.

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